export var option = {
    title: {
        text: 'Stacked Area Chart'
    },
    xAxis: {
      type: 'category',
      boundaryGap: false,
      data: []
    },
    yAxis: {
      type: 'value'
    },
    series: [
      {
        data: [],
        type: 'line',
        areaStyle: {}
      }
    ]
  };